1 /* crypto/pkcs7/pk7_lib.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59 #include <stdio.h>
60 #include "cryptlib.h"
61 #include <openssl/objects.h>
62 #include <openssl/x509.h>
63 #include "asn1_locl.h"
64
65 long PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg)
66 {
67 int nid;
68 long ret;
69
70 nid=OBJ_obj2nid(p7->type);
71
72 switch (cmd)
73 {
74 case PKCS7_OP_SET_DETACHED_SIGNATURE:
75 if (nid == NID_pkcs7_signed)
76 {
77 ret=p7->detached=(int)larg;
78 if (ret && PKCS7_type_is_data(p7->d.sign->contents))
79 {
80 ASN1_OCTET_STRING *os;
81 os=p7->d.sign->contents->d.data;
82 ASN1_OCTET_STRING_free(os);
83 p7->d.sign->contents->d.data = NULL;
84 }
85 }
86 else
87 {
88 PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
89 ret=0;
90 }
91 break;
92 case PKCS7_OP_GET_DETACHED_SIGNATURE:
93 if (nid == NID_pkcs7_signed)
94 {
95 if(!p7->d.sign || !p7->d.sign->contents->d.ptr)
96 ret = 1;
97 else ret = 0;
98
99 p7->detached = ret;
100 }
101 else
102 {
103 PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
104 ret=0;
105 }
106
107 break;
108 default:
109 PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_UNKNOWN_OPERATION);
110 ret=0;
111 }
112 return(ret);
113 }
114
115 int PKCS7_content_new(PKCS7 *p7, int type)
116 {
117 PKCS7 *ret=NULL;
118
119 if ((ret=PKCS7_new()) == NULL) goto err;
120 if (!PKCS7_set_type(ret,type)) goto err;
121 if (!PKCS7_set_content(p7,ret)) goto err;
122
123 return(1);
124 err:
125 if (ret != NULL) PKCS7_free(ret);
126 return(0);
127 }
128
129 int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data)
130 {
131 int i;
132
133 i=OBJ_obj2nid(p7->type);
134 switch (i)
135 {
136 case NID_pkcs7_signed:
137 if (p7->d.sign->contents != NULL)
138 PKCS7_free(p7->d.sign->contents);
139 p7->d.sign->contents=p7_data;
140 break;
141 case NID_pkcs7_digest:
142 if (p7->d.digest->contents != NULL)
143 PKCS7_free(p7->d.digest->contents);
144 p7->d.digest->contents=p7_data;
145 break;
146 case NID_pkcs7_data:
147 case NID_pkcs7_enveloped:
148 case NID_pkcs7_signedAndEnveloped:
149 case NID_pkcs7_encrypted:
150 default:
151 PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
152 goto err;
153 }
154 return(1);
155 err:
156 return(0);
157 }
158
159 int PKCS7_set_type(PKCS7 *p7, int type)
160 {
161 ASN1_OBJECT *obj;
162
163 /*PKCS7_content_free(p7);*/
164 obj=OBJ_nid2obj(type); /* will not fail */
165
166 switch (type)
167 {
168 case NID_pkcs7_signed:
169 p7->type=obj;
170 if ((p7->d.sign=PKCS7_SIGNED_new()) == NULL)
171 goto err;
172 if (!ASN1_INTEGER_set(p7->d.sign->version,1))
173 {
174 PKCS7_SIGNED_free(p7->d.sign);
175 p7->d.sign=NULL;
176 goto err;
177 }
178 break;
179 case NID_pkcs7_data:
180 p7->type=obj;
181 if ((p7->d.data=M_ASN1_OCTET_STRING_new()) == NULL)
182 goto err;
183 break;
184 case NID_pkcs7_signedAndEnveloped:
185 p7->type=obj;
186 if ((p7->d.signed_and_enveloped=PKCS7_SIGN_ENVELOPE_new())
187 == NULL) goto err;
188 ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1);
189 if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1))
190 goto err;
191 p7->d.signed_and_enveloped->enc_data->content_type
192 = OBJ_nid2obj(NID_pkcs7_data);
193 break;
194 case NID_pkcs7_enveloped:
195 p7->type=obj;
196 if ((p7->d.enveloped=PKCS7_ENVELOPE_new())
197 == NULL) goto err;
198 if (!ASN1_INTEGER_set(p7->d.enveloped->version,0))
199 goto err;
200 p7->d.enveloped->enc_data->content_type
201 = OBJ_nid2obj(NID_pkcs7_data);
202 break;
203 case NID_pkcs7_encrypted:
204 p7->type=obj;
205 if ((p7->d.encrypted=PKCS7_ENCRYPT_new())
206 == NULL) goto err;
207 if (!ASN1_INTEGER_set(p7->d.encrypted->version,0))
208 goto err;
209 p7->d.encrypted->enc_data->content_type
210 = OBJ_nid2obj(NID_pkcs7_data);
211 break;
212
213 case NID_pkcs7_digest:
214 p7->type=obj;
215 if ((p7->d.digest=PKCS7_DIGEST_new())
216 == NULL) goto err;
217 if (!ASN1_INTEGER_set(p7->d.digest->version,0))
218 goto err;
219 break;
220 default:
221 PKCS7err(PKCS7_F_PKCS7_SET_TYPE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
222 goto err;
223 }
224 return(1);
225 err:
226 return(0);
227 }
228
229 int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other)
230 {
231 p7->type = OBJ_nid2obj(type);
232 p7->d.other = other;
233 return 1;
234 }
235
236 int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
237 {
238 int i,j,nid;
239 X509_ALGOR *alg;
240 STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
241 STACK_OF(X509_ALGOR) *md_sk;
242
243 i=OBJ_obj2nid(p7->type);
244 switch (i)
245 {
246 case NID_pkcs7_signed:
247 signer_sk= p7->d.sign->signer_info;
248 md_sk= p7->d.sign->md_algs;
249 break;
250 case NID_pkcs7_signedAndEnveloped:
251 signer_sk= p7->d.signed_and_enveloped->signer_info;
252 md_sk= p7->d.signed_and_enveloped->md_algs;
253 break;
254 default:
255 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE);
256 return(0);
257 }
258
259 nid=OBJ_obj2nid(psi->digest_alg->algorithm);
260
261 /* If the digest is not currently listed, add it */
262 j=0;
263 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
264 {
265 alg=sk_X509_ALGOR_value(md_sk,i);
266 if (OBJ_obj2nid(alg->algorithm) == nid)
267 {
268 j=1;
269 break;
270 }
271 }
272 if (!j) /* we need to add another algorithm */
273 {
274 if(!(alg=X509_ALGOR_new())
275 || !(alg->parameter = ASN1_TYPE_new()))
276 {
277 X509_ALGOR_free(alg);
278 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,ERR_R_MALLOC_FAILURE);
279 return(0);
280 }
281 alg->algorithm=OBJ_nid2obj(nid);
282 alg->parameter->type = V_ASN1_NULL;
283 if (!sk_X509_ALGOR_push(md_sk,alg))
284 {
285 X509_ALGOR_free(alg);
286 return 0;
287 }
288 }
289
290 if (!sk_PKCS7_SIGNER_INFO_push(signer_sk,psi))
291 return 0;
292 return(1);
293 }
294
295 int PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
296 {
297 int i;
298 STACK_OF(X509) **sk;
299
300 i=OBJ_obj2nid(p7->type);
301 switch (i)
302 {
303 case NID_pkcs7_signed:
304 sk= &(p7->d.sign->cert);
305 break;
306 case NID_pkcs7_signedAndEnveloped:
307 sk= &(p7->d.signed_and_enveloped->cert);
308 break;
309 default:
310 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,PKCS7_R_WRONG_CONTENT_TYPE);
311 return(0);
312 }
313
314 if (*sk == NULL)
315 *sk=sk_X509_new_null();
316 if (*sk == NULL)
317 {
318 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE);
319 return 0;
320 }
321 CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
322 if (!sk_X509_push(*sk,x509))
323 {
324 X509_free(x509);
325 return 0;
326 }
327 return(1);
328 }
329
330 int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
331 {
332 int i;
333 STACK_OF(X509_CRL) **sk;
334
335 i=OBJ_obj2nid(p7->type);
336 switch (i)
337 {
338 case NID_pkcs7_signed:
339 sk= &(p7->d.sign->crl);
340 break;
341 case NID_pkcs7_signedAndEnveloped:
342 sk= &(p7->d.signed_and_enveloped->crl);
343 break;
344 default:
345 PKCS7err(PKCS7_F_PKCS7_ADD_CRL,PKCS7_R_WRONG_CONTENT_TYPE);
346 return(0);
347 }
348
349 if (*sk == NULL)
350 *sk=sk_X509_CRL_new_null();
351 if (*sk == NULL)
352 {
353 PKCS7err(PKCS7_F_PKCS7_ADD_CRL,ERR_R_MALLOC_FAILURE);
354 return 0;
355 }
356
357 CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL);
358 if (!sk_X509_CRL_push(*sk,crl))
359 {
360 X509_CRL_free(crl);
361 return 0;
362 }
363 return(1);
364 }
365
366 int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey,
367 const EVP_MD *dgst)
368 {
369 int ret;
370
371 /* We now need to add another PKCS7_SIGNER_INFO entry */
372 if (!ASN1_INTEGER_set(p7i->version,1))
373 goto err;
374 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
375 X509_get_issuer_name(x509)))
376 goto err;
377
378 /* because ASN1_INTEGER_set is used to set a 'long' we will do
379 * things the ugly way. */
380 M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
381 if (!(p7i->issuer_and_serial->serial=
382 M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
383 goto err;
384
385 /* lets keep the pkey around for a while */
386 CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
387 p7i->pkey=pkey;
388
389 /* Set the algorithms */
390
391 X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)),
392 V_ASN1_NULL, NULL);
393
394 if (pkey->ameth && pkey->ameth->pkey_ctrl)
395 {
396 ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN,
397 0, p7i);
398 if (ret > 0)
399 return 1;
400 if (ret != -2)
401 {
402 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
403 PKCS7_R_SIGNING_CTRL_FAILURE);
404 return 0;
405 }
406 }
407 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
408 PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
409 err:
410 return 0;
411 }
412
413 PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey,
414 const EVP_MD *dgst)
415 {
416 PKCS7_SIGNER_INFO *si = NULL;
417
418 if (dgst == NULL)
419 {
420 int def_nid;
421 if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0)
422 goto err;
423 dgst = EVP_get_digestbynid(def_nid);
424 if (dgst == NULL)
425 {
426 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE,
427 PKCS7_R_NO_DEFAULT_DIGEST);
428 goto err;
429 }
430 }
431
432 if ((si=PKCS7_SIGNER_INFO_new()) == NULL) goto err;
433 if (!PKCS7_SIGNER_INFO_set(si,x509,pkey,dgst)) goto err;
434 if (!PKCS7_add_signer(p7,si)) goto err;
435 return(si);
436 err:
437 if (si)
438 PKCS7_SIGNER_INFO_free(si);
439 return(NULL);
440 }
441
442 int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md)
443 {
444 if (PKCS7_type_is_digest(p7))
445 {
446 if(!(p7->d.digest->md->parameter = ASN1_TYPE_new()))
447 {
448 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,ERR_R_MALLOC_FAILURE);
449 return 0;
450 }
451 p7->d.digest->md->parameter->type = V_ASN1_NULL;
452 p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
453 return 1;
454 }
455
456 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,PKCS7_R_WRONG_CONTENT_TYPE);
457 return 1;
458 }
459
460 STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7)
461 {
462 if (PKCS7_type_is_signed(p7))
463 {
464 return(p7->d.sign->signer_info);
465 }
466 else if (PKCS7_type_is_signedAndEnveloped(p7))
467 {
468 return(p7->d.signed_and_enveloped->signer_info);
469 }
470 else
471 return(NULL);
472 }
473
474 void PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO *si, EVP_PKEY **pk,
475 X509_ALGOR **pdig, X509_ALGOR **psig)
476 {
477 if (pk)
478 *pk = si->pkey;
479 if (pdig)
480 *pdig = si->digest_alg;
481 if (psig)
482 *psig = si->digest_enc_alg;
483 }
484
485 void PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc)
486 {
487 if (penc)
488 *penc = ri->key_enc_algor;
489 }
490
491 PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509)
492 {
493 PKCS7_RECIP_INFO *ri;
494
495 if ((ri=PKCS7_RECIP_INFO_new()) == NULL) goto err;
496 if (!PKCS7_RECIP_INFO_set(ri,x509)) goto err;
497 if (!PKCS7_add_recipient_info(p7,ri)) goto err;
498 return ri;
499 err:
500 if (ri)
501 PKCS7_RECIP_INFO_free(ri);
502 return NULL;
503 }
504
505 int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
506 {
507 int i;
508 STACK_OF(PKCS7_RECIP_INFO) *sk;
509
510 i=OBJ_obj2nid(p7->type);
511 switch (i)
512 {
513 case NID_pkcs7_signedAndEnveloped:
514 sk= p7->d.signed_and_enveloped->recipientinfo;
515 break;
516 case NID_pkcs7_enveloped:
517 sk= p7->d.enveloped->recipientinfo;
518 break;
519 default:
520 PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,PKCS7_R_WRONG_CONTENT_TYPE);
521 return(0);
522 }
523
524 if (!sk_PKCS7_RECIP_INFO_push(sk,ri))
525 return 0;
526 return(1);
527 }
528
529 int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
530 {
531 int ret;
532 EVP_PKEY *pkey = NULL;
533 if (!ASN1_INTEGER_set(p7i->version,0))
534 return 0;
535 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
536 X509_get_issuer_name(x509)))
537 return 0;
538
539 M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
540 if (!(p7i->issuer_and_serial->serial=
541 M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
542 return 0;
543
544 pkey = X509_get_pubkey(x509);
545
546 if (!pkey || !pkey->ameth || !pkey->ameth->pkey_ctrl)
547 {
548 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
549 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
550 goto err;
551 }
552
553 ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT,
554 0, p7i);
555 if (ret == -2)
556 {
557 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
558 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
559 goto err;
560 }
561 if (ret <= 0)
562 {
563 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
564 PKCS7_R_ENCRYPTION_CTRL_FAILURE);
565 goto err;
566 }
567
568 EVP_PKEY_free(pkey);
569
570 CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
571 p7i->cert=x509;
572
573 return 1;
574
575 err:
576 if (pkey)
577 EVP_PKEY_free(pkey);
578 return 0;
579 }
580
581 X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
582 {
583 if (PKCS7_type_is_signed(p7))
584 return(X509_find_by_issuer_and_serial(p7->d.sign->cert,
585 si->issuer_and_serial->issuer,
586 si->issuer_and_serial->serial));
587 else
588 return(NULL);
589 }
590
591 int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
592 {
593 int i;
594 PKCS7_ENC_CONTENT *ec;
595
596 i=OBJ_obj2nid(p7->type);
597 switch (i)
598 {
599 case NID_pkcs7_signedAndEnveloped:
600 ec=p7->d.signed_and_enveloped->enc_data;
601 break;
602 case NID_pkcs7_enveloped:
603 ec=p7->d.enveloped->enc_data;
604 break;
605 default:
606 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_WRONG_CONTENT_TYPE);
607 return(0);
608 }
609
610 /* Check cipher OID exists and has data in it*/
611 i = EVP_CIPHER_type(cipher);
612 if(i == NID_undef) {
613 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
614 return(0);
615 }
616
617 ec->cipher = cipher;
618 return 1;
619 }
620
621 int PKCS7_stream(unsigned char ***boundary, PKCS7 *p7)
622 {
623 ASN1_OCTET_STRING *os = NULL;
624
625 switch (OBJ_obj2nid(p7->type))
626 {
627 case NID_pkcs7_data:
628 os = p7->d.data;
629 break;
630
631 case NID_pkcs7_signedAndEnveloped:
632 os = p7->d.signed_and_enveloped->enc_data->enc_data;
633 if (os == NULL)
634 {
635 os=M_ASN1_OCTET_STRING_new();
636 p7->d.signed_and_enveloped->enc_data->enc_data=os;
637 }
638 break;
639
640 case NID_pkcs7_enveloped:
641 os = p7->d.enveloped->enc_data->enc_data;
642 if (os == NULL)
643 {
644 os=M_ASN1_OCTET_STRING_new();
645 p7->d.enveloped->enc_data->enc_data=os;
646 }
647 break;
648
649 case NID_pkcs7_signed:
650 os=p7->d.sign->contents->d.data;
651 break;
652
653 default:
654 os = NULL;
655 break;
656 }
657
658 if (os == NULL)
659 return 0;
660
661 os->flags |= ASN1_STRING_FLAG_NDEF;
662 *boundary = &os->data;
663
664 return 1;
665 }